Cream butter; gradually add sugar beating well. Add eggs, one at a time, beating well after each addition.
Combine flour, soda, and salt; add to creamed mixture alternately with buttermilk, beginning and ending with the flour mixture. Stir in pecans and lemon rind.
Pour batter into a greased and floured 9X5X3 loaf pan. Bake at 350 degrees for 1 hour and 15 to 20 minutes or until a wooden pick inserted in center comes out clean. Cool 10 minutes, remove loaf from pan and cool completely.